Mercurial > hg
view tests/test-static-http.t @ 30446:b324b4e431e5
posix: give checkexec a fast path; keep the check files and test read only
Before, Mercurial would create a new temporary file every time, stat it, change
its exec mode, stat it again, and delete it. Most of this dance was done to
handle the rare and not-so-essential case of VFAT mounts on unix. The cost of
that was paid by the much more common and important case of using normal file
systems.
Instead, try to create and preserve .hg/cache/checkisexec and
.hg/cache/checknoexec with and without exec flag set. If the files exist and
have correct exec flags set, we can conclude that that file system supports the
exec flag. Best case, the whole exec check can thus be done with two stat
calls. Worst case, we delete the wrong files and check as usual. That will be
because temporary loss of exec bit or on file systems without support for the
exec bit. In that case we check as we did before, with the additional overhead
of one extra stat call.
It is possible that this different test algorithm in some cases on odd file
systems will give different behaviour. Again, I think it will be rare and
special cases and I think it is worth the risk.
test-clone.t happens to show the situation where checkisexec is left behind
from the old style check, while checknoexec only will be created next time a
exec check will be performed.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 14 Jan 2015 01:15:26 +0100 |
parents | 34a5f6c66bc5 |
children | 728d37353e1e |
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#require killdaemons $ hg clone http://localhost:$HGPORT/ copy abort: * (glob) [255] $ test -d copy [1] This server doesn't do range requests so it's basically only good for one pull $ python "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid $ cat dumb.pid >> $DAEMON_PIDS $ hg init remote $ cd remote $ echo foo > bar $ echo c2 > '.dotfile with spaces' $ hg add adding .dotfile with spaces adding bar $ hg commit -m"test" $ hg tip changeset: 0:02770d679fb8 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: test $ cd .. $ hg clone static-http://localhost:$HGPORT/remote local requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd local $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 2 files, 1 changesets, 2 total revisions $ cat bar foo $ cd ../remote $ echo baz > quux $ hg commit -A -mtest2 adding quux check for HTTP opener failures when cachefile does not exist $ rm .hg/cache/* $ cd ../local $ cat >> .hg/hgrc <<EOF > [hooks] > changegroup = sh -c "printenv.py changegroup" > EOF $ hg pull pulling from static-http://localhost:$HGPORT/remote searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files changegroup hook: HG_NODE=4ac2e3648604439c580c69b09ec9d93a88d93432 HG_NODE_LAST=4ac2e3648604439c580c69b09ec9d93a88d93432 HG_SOURCE=pull HG_TXNID=TXN:* HG_URL=http://localhost:$HGPORT/remote (glob) (run 'hg update' to get a working copy) trying to push $ hg update 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo more foo >> bar $ hg commit -m"test" $ hg push pushing to static-http://localhost:$HGPORT/remote abort: destination does not support push [255] trying clone -r $ cd .. $ hg clone -r doesnotexist static-http://localhost:$HGPORT/remote local0 abort: unknown revision 'doesnotexist'! [255] $ hg clone -r 0 static-http://localhost:$HGPORT/remote local0 adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved test with "/" URI (issue747) and subrepo $ hg init $ hg init sub $ touch sub/test $ hg -R sub commit -A -m "test" adding test $ hg -R sub tag not-empty $ echo sub=sub > .hgsub $ echo a > a $ hg add a .hgsub $ hg -q ci -ma $ hg clone static-http://localhost:$HGPORT/ local2 requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 3 changes to 3 files updating to branch default cloning subrepo sub from static-http://localhost:$HGPORT/sub requesting all changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd local2 $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 3 files, 1 changesets, 3 total revisions checking subrepo links $ cat a a $ hg paths default = static-http://localhost:$HGPORT/ test with empty repo (issue965) $ cd .. $ hg init remotempty $ hg clone static-http://localhost:$HGPORT/remotempty local3 no changes found updating to branch default 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd local3 $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 0 files, 0 changesets, 0 total revisions $ hg paths default = static-http://localhost:$HGPORT/remotempty test with non-repo $ cd .. $ mkdir notarepo $ hg clone static-http://localhost:$HGPORT/notarepo local3 abort: 'http://localhost:$HGPORT/notarepo' does not appear to be an hg repository! [255] $ killdaemons.py